| Resonant Reaction in Rb-Cs Vapour Mixture Rb（5P1/2） ＋ Cs（6P3/2） → Cs（8S1/2）＋Rb（5S1/2） |
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| 引用本文： | 沈异凡,戴康,黎保霞,王淑英,崔秀花.Resonant Reaction in Rb-Cs Vapour Mixture Rb（5P1/2） ＋ Cs（6P3/2） → Cs（8S1/2）＋Rb（5S1/2）[J].中国物理快报,2006,23(5):1173-1175. |
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| 作者姓名： | 沈异凡 戴康 黎保霞 王淑英 崔秀花 |
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| 作者单位： | Department of Physics, Xinjiang University, Urumqi 830046 |
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| 摘 要： | We experimentally study energy-pooling collision in the Rb-Cs vapour mixture at low densities in a cell. Atoms are excited to Rb（5P1/2） and Cs（6P3/2） states using two single-mode diode lasers. To isolate the heteronuclear contribution in the fluorescence spectrum, a double-modulation technique is adopted. The excited-atom density and spatial distribution are mapped by monitoring the absorption of a counterpropagating single-mode diode laser beam, tuned to Rb（5P1/2 → 7S1/2） and Cs（6Pa/2 → 8S1/2） transitions, respectively, which could be translated parallel to the pump beams. The excited atom densities are combined with the measured fluorescence ratios to determine cross section for the energy-pooling process i.e. Rb（5P1/2） ＋Cs （6P3/2） → Cs（8S1/2）＋Rb （5S1/2）]. The cross section is 3.79 × 10^-14 cm^2 ± 45%.
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| 关 键 词： | 反作用 铷-铯水蒸汽 能量碰撞散射 低密度 单模二极管激光器 |
| 收稿时间： | 2006-01-18 |
| 修稿时间： | 2006-01-18 |
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